CBI today questioned Himachal Pradesh Chief Minister Virbhadra Singh in connection with its probe into allegations of disproportionate assets amassed during his tenure as Union Minister. <br/><br/>Mr Singh appeared for questioning at the agency headquarters in New Delhi. <br/><br/>The agency had initiated an inquiry which had allegedly showed that during UPA rule Mr Singh had allegedly accumulated assets worth over six crore rupees in his name and in the name of his family members. <br/><br/>An FIR has already been filed under the Prevention of Corruption Act against him and others. However, the Chief Minister has been refuting the allegations.